1 /* 2 * Copyright IBM Corp. 2007, 2009 3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 4 * Frank Pavlic <fpavlic@de.ibm.com>, 5 * Thomas Spatzier <tspat@de.ibm.com>, 6 * Frank Blaschka <frank.blaschka@de.ibm.com> 7 */ 8 9 #define KMSG_COMPONENT "qeth" 10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 11 12 #include <linux/module.h> 13 #include <linux/moduleparam.h> 14 #include <linux/string.h> 15 #include <linux/errno.h> 16 #include <linux/kernel.h> 17 #include <linux/slab.h> 18 #include <linux/etherdevice.h> 19 #include <linux/mii.h> 20 #include <linux/ip.h> 21 #include <linux/list.h> 22 #include <linux/hash.h> 23 #include <linux/hashtable.h> 24 #include <linux/string.h> 25 #include "qeth_core.h" 26 #include "qeth_l2.h" 27 28 static int qeth_l2_set_offline(struct ccwgroup_device *); 29 static int qeth_l2_stop(struct net_device *); 30 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *); 31 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *, 32 enum qeth_ipa_cmds); 33 static void qeth_l2_set_rx_mode(struct net_device *); 34 static int qeth_l2_recover(void *); 35 static void qeth_bridgeport_query_support(struct qeth_card *card); 36 static void qeth_bridge_state_change(struct qeth_card *card, 37 struct qeth_ipa_cmd *cmd); 38 static void qeth_bridge_host_event(struct qeth_card *card, 39 struct qeth_ipa_cmd *cmd); 40 41 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 42 { 43 struct qeth_card *card = dev->ml_priv; 44 struct mii_ioctl_data *mii_data; 45 int rc = 0; 46 47 if (!card) 48 return -ENODEV; 49 50 if (!qeth_card_hw_is_reachable(card)) 51 return -ENODEV; 52 53 if (card->info.type == QETH_CARD_TYPE_OSN) 54 return -EPERM; 55 56 switch (cmd) { 57 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 58 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 59 break; 60 case SIOC_QETH_GET_CARD_TYPE: 61 if ((card->info.type == QETH_CARD_TYPE_OSD || 62 card->info.type == QETH_CARD_TYPE_OSM || 63 card->info.type == QETH_CARD_TYPE_OSX) && 64 !card->info.guestlan) 65 return 1; 66 return 0; 67 break; 68 case SIOCGMIIPHY: 69 mii_data = if_mii(rq); 70 mii_data->phy_id = 0; 71 break; 72 case SIOCGMIIREG: 73 mii_data = if_mii(rq); 74 if (mii_data->phy_id != 0) 75 rc = -EINVAL; 76 else 77 mii_data->val_out = qeth_mdio_read(dev, 78 mii_data->phy_id, mii_data->reg_num); 79 break; 80 case SIOC_QETH_QUERY_OAT: 81 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 82 break; 83 default: 84 rc = -EOPNOTSUPP; 85 } 86 if (rc) 87 QETH_CARD_TEXT_(card, 2, "ioce%d", rc); 88 return rc; 89 } 90 91 static int qeth_l2_verify_dev(struct net_device *dev) 92 { 93 struct qeth_card *card; 94 unsigned long flags; 95 int rc = 0; 96 97 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 98 list_for_each_entry(card, &qeth_core_card_list.list, list) { 99 if (card->dev == dev) { 100 rc = QETH_REAL_CARD; 101 break; 102 } 103 } 104 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 105 106 return rc; 107 } 108 109 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 110 { 111 struct qeth_card *card; 112 struct net_device *ndev; 113 __u16 temp_dev_no; 114 unsigned long flags; 115 struct ccw_dev_id read_devid; 116 117 ndev = NULL; 118 memcpy(&temp_dev_no, read_dev_no, 2); 119 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 120 list_for_each_entry(card, &qeth_core_card_list.list, list) { 121 ccw_device_get_id(CARD_RDEV(card), &read_devid); 122 if (read_devid.devno == temp_dev_no) { 123 ndev = card->dev; 124 break; 125 } 126 } 127 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 128 return ndev; 129 } 130 131 static int qeth_setdel_makerc(struct qeth_card *card, int retcode) 132 { 133 int rc; 134 135 if (retcode) 136 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 137 switch (retcode) { 138 case IPA_RC_SUCCESS: 139 rc = 0; 140 break; 141 case IPA_RC_L2_UNSUPPORTED_CMD: 142 rc = -EOPNOTSUPP; 143 break; 144 case IPA_RC_L2_ADDR_TABLE_FULL: 145 rc = -ENOSPC; 146 break; 147 case IPA_RC_L2_DUP_MAC: 148 case IPA_RC_L2_DUP_LAYER3_MAC: 149 rc = -EEXIST; 150 break; 151 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 152 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 153 rc = -EPERM; 154 break; 155 case IPA_RC_L2_MAC_NOT_FOUND: 156 rc = -ENOENT; 157 break; 158 case -ENOMEM: 159 rc = -ENOMEM; 160 break; 161 default: 162 rc = -EIO; 163 break; 164 } 165 return rc; 166 } 167 168 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac) 169 { 170 int rc; 171 172 QETH_CARD_TEXT(card, 2, "L2Sgmac"); 173 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac, 174 IPA_CMD_SETGMAC)); 175 if (rc == -EEXIST) 176 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n", 177 mac, QETH_CARD_IFNAME(card)); 178 else if (rc) 179 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n", 180 mac, QETH_CARD_IFNAME(card), rc); 181 return rc; 182 } 183 184 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac) 185 { 186 int rc; 187 188 QETH_CARD_TEXT(card, 2, "L2Dgmac"); 189 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac, 190 IPA_CMD_DELGMAC)); 191 if (rc) 192 QETH_DBF_MESSAGE(2, 193 "Could not delete group MAC %pM on %s: %d\n", 194 mac, QETH_CARD_IFNAME(card), rc); 195 return rc; 196 } 197 198 static inline u32 qeth_l2_mac_hash(const u8 *addr) 199 { 200 return get_unaligned((u32 *)(&addr[2])); 201 } 202 203 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac) 204 { 205 206 int rc; 207 208 if (mac->is_uc) { 209 rc = qeth_setdel_makerc(card, 210 qeth_l2_send_setdelmac(card, mac->mac_addr, 211 IPA_CMD_SETVMAC)); 212 } else { 213 rc = qeth_setdel_makerc(card, 214 qeth_l2_send_setgroupmac(card, mac->mac_addr)); 215 } 216 return rc; 217 } 218 219 static void qeth_l2_del_all_macs(struct qeth_card *card, int del) 220 { 221 struct qeth_mac *mac; 222 struct hlist_node *tmp; 223 int i; 224 225 spin_lock_bh(&card->mclock); 226 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 227 if (del) { 228 if (mac->is_uc) 229 qeth_l2_send_setdelmac(card, mac->mac_addr, 230 IPA_CMD_DELVMAC); 231 else 232 qeth_l2_send_delgroupmac(card, mac->mac_addr); 233 } 234 hash_del(&mac->hnode); 235 kfree(mac); 236 } 237 spin_unlock_bh(&card->mclock); 238 } 239 240 static inline int qeth_l2_get_cast_type(struct qeth_card *card, 241 struct sk_buff *skb) 242 { 243 if (card->info.type == QETH_CARD_TYPE_OSN) 244 return RTN_UNSPEC; 245 if (is_broadcast_ether_addr(skb->data)) 246 return RTN_BROADCAST; 247 if (is_multicast_ether_addr(skb->data)) 248 return RTN_MULTICAST; 249 return RTN_UNSPEC; 250 } 251 252 static inline void qeth_l2_hdr_csum(struct qeth_card *card, 253 struct qeth_hdr *hdr, struct sk_buff *skb) 254 { 255 struct iphdr *iph = ip_hdr(skb); 256 257 /* tcph->check contains already the pseudo hdr checksum 258 * so just set the header flags 259 */ 260 if (iph->protocol == IPPROTO_UDP) 261 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP; 262 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ | 263 QETH_HDR_EXT_CSUM_HDR_REQ; 264 iph->check = 0; 265 if (card->options.performance_stats) 266 card->perf_stats.tx_csum++; 267 } 268 269 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, 270 struct sk_buff *skb, int cast_type) 271 { 272 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 273 274 memset(hdr, 0, sizeof(struct qeth_hdr)); 275 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 276 277 /* set byte byte 3 to casting flags */ 278 if (cast_type == RTN_MULTICAST) 279 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 280 else if (cast_type == RTN_BROADCAST) 281 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 282 else 283 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 284 285 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE; 286 /* VSWITCH relies on the VLAN 287 * information to be present in 288 * the QDIO header */ 289 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 290 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 291 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 292 } 293 } 294 295 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 296 struct qeth_reply *reply, unsigned long data) 297 { 298 struct qeth_ipa_cmd *cmd; 299 300 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 301 cmd = (struct qeth_ipa_cmd *) data; 302 if (cmd->hdr.return_code) { 303 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. " 304 "Continuing\n", cmd->data.setdelvlan.vlan_id, 305 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 306 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 307 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 308 } 309 return 0; 310 } 311 312 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 313 enum qeth_ipa_cmds ipacmd) 314 { 315 struct qeth_ipa_cmd *cmd; 316 struct qeth_cmd_buffer *iob; 317 318 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 319 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 320 if (!iob) 321 return -ENOMEM; 322 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 323 cmd->data.setdelvlan.vlan_id = i; 324 return qeth_send_ipa_cmd(card, iob, 325 qeth_l2_send_setdelvlan_cb, NULL); 326 } 327 328 static void qeth_l2_process_vlans(struct qeth_card *card) 329 { 330 struct qeth_vlan_vid *id; 331 QETH_CARD_TEXT(card, 3, "L2prcvln"); 332 spin_lock_bh(&card->vlanlock); 333 list_for_each_entry(id, &card->vid_list, list) { 334 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 335 } 336 spin_unlock_bh(&card->vlanlock); 337 } 338 339 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 340 __be16 proto, u16 vid) 341 { 342 struct qeth_card *card = dev->ml_priv; 343 struct qeth_vlan_vid *id; 344 int rc; 345 346 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 347 if (!vid) 348 return 0; 349 if (card->info.type == QETH_CARD_TYPE_OSM) { 350 QETH_CARD_TEXT(card, 3, "aidOSM"); 351 return 0; 352 } 353 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 354 QETH_CARD_TEXT(card, 3, "aidREC"); 355 return 0; 356 } 357 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 358 if (id) { 359 id->vid = vid; 360 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 361 if (rc) { 362 kfree(id); 363 return rc; 364 } 365 spin_lock_bh(&card->vlanlock); 366 list_add_tail(&id->list, &card->vid_list); 367 spin_unlock_bh(&card->vlanlock); 368 } else { 369 return -ENOMEM; 370 } 371 return 0; 372 } 373 374 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 375 __be16 proto, u16 vid) 376 { 377 struct qeth_vlan_vid *id, *tmpid = NULL; 378 struct qeth_card *card = dev->ml_priv; 379 int rc = 0; 380 381 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 382 if (card->info.type == QETH_CARD_TYPE_OSM) { 383 QETH_CARD_TEXT(card, 3, "kidOSM"); 384 return 0; 385 } 386 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 387 QETH_CARD_TEXT(card, 3, "kidREC"); 388 return 0; 389 } 390 spin_lock_bh(&card->vlanlock); 391 list_for_each_entry(id, &card->vid_list, list) { 392 if (id->vid == vid) { 393 list_del(&id->list); 394 tmpid = id; 395 break; 396 } 397 } 398 spin_unlock_bh(&card->vlanlock); 399 if (tmpid) { 400 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 401 kfree(tmpid); 402 } 403 qeth_l2_set_rx_mode(card->dev); 404 return rc; 405 } 406 407 static netdev_features_t qeth_l2_fix_features(struct net_device *dev, 408 netdev_features_t features) 409 { 410 struct qeth_card *card = dev->ml_priv; 411 412 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 413 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 414 features &= ~NETIF_F_IP_CSUM; 415 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 416 features &= ~NETIF_F_RXCSUM; 417 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 418 return features; 419 } 420 421 static int qeth_l2_set_features(struct net_device *dev, 422 netdev_features_t features) 423 { 424 struct qeth_card *card = dev->ml_priv; 425 netdev_features_t changed = dev->features ^ features; 426 427 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 428 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 429 430 if (card->state == CARD_STATE_DOWN || 431 card->state == CARD_STATE_RECOVER) 432 return 0; 433 434 if (!(changed & NETIF_F_RXCSUM)) 435 return 0; 436 return qeth_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0); 437 } 438 439 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 440 { 441 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 442 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 443 444 qeth_set_allowed_threads(card, 0, 1); 445 if (card->read.state == CH_STATE_UP && 446 card->write.state == CH_STATE_UP && 447 (card->state == CARD_STATE_UP)) { 448 if (recovery_mode && 449 card->info.type != QETH_CARD_TYPE_OSN) { 450 qeth_l2_stop(card->dev); 451 } else { 452 rtnl_lock(); 453 dev_close(card->dev); 454 rtnl_unlock(); 455 } 456 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 457 card->state = CARD_STATE_SOFTSETUP; 458 } 459 if (card->state == CARD_STATE_SOFTSETUP) { 460 qeth_l2_del_all_macs(card, 0); 461 qeth_clear_ipacmd_list(card); 462 card->state = CARD_STATE_HARDSETUP; 463 } 464 if (card->state == CARD_STATE_HARDSETUP) { 465 qeth_qdio_clear_card(card, 0); 466 qeth_clear_qdio_buffers(card); 467 qeth_clear_working_pool_list(card); 468 card->state = CARD_STATE_DOWN; 469 } 470 if (card->state == CARD_STATE_DOWN) { 471 qeth_clear_cmd_buffers(&card->read); 472 qeth_clear_cmd_buffers(&card->write); 473 } 474 } 475 476 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 477 int budget, int *done) 478 { 479 int work_done = 0; 480 struct sk_buff *skb; 481 struct qeth_hdr *hdr; 482 unsigned int len; 483 484 *done = 0; 485 WARN_ON_ONCE(!budget); 486 while (budget) { 487 skb = qeth_core_get_next_skb(card, 488 &card->qdio.in_q->bufs[card->rx.b_index], 489 &card->rx.b_element, &card->rx.e_offset, &hdr); 490 if (!skb) { 491 *done = 1; 492 break; 493 } 494 skb->dev = card->dev; 495 switch (hdr->hdr.l2.id) { 496 case QETH_HEADER_TYPE_LAYER2: 497 skb->pkt_type = PACKET_HOST; 498 skb->protocol = eth_type_trans(skb, skb->dev); 499 if ((card->dev->features & NETIF_F_RXCSUM) 500 && ((hdr->hdr.l2.flags[1] & 501 (QETH_HDR_EXT_CSUM_HDR_REQ | 502 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 503 (QETH_HDR_EXT_CSUM_HDR_REQ | 504 QETH_HDR_EXT_CSUM_TRANSP_REQ))) 505 skb->ip_summed = CHECKSUM_UNNECESSARY; 506 else 507 skb->ip_summed = CHECKSUM_NONE; 508 if (skb->protocol == htons(ETH_P_802_2)) 509 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 510 len = skb->len; 511 napi_gro_receive(&card->napi, skb); 512 break; 513 case QETH_HEADER_TYPE_OSN: 514 if (card->info.type == QETH_CARD_TYPE_OSN) { 515 skb_push(skb, sizeof(struct qeth_hdr)); 516 skb_copy_to_linear_data(skb, hdr, 517 sizeof(struct qeth_hdr)); 518 len = skb->len; 519 card->osn_info.data_cb(skb); 520 break; 521 } 522 /* else unknown */ 523 default: 524 dev_kfree_skb_any(skb); 525 QETH_CARD_TEXT(card, 3, "inbunkno"); 526 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 527 continue; 528 } 529 work_done++; 530 budget--; 531 card->stats.rx_packets++; 532 card->stats.rx_bytes += len; 533 } 534 return work_done; 535 } 536 537 static int qeth_l2_poll(struct napi_struct *napi, int budget) 538 { 539 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 540 int work_done = 0; 541 struct qeth_qdio_buffer *buffer; 542 int done; 543 int new_budget = budget; 544 545 if (card->options.performance_stats) { 546 card->perf_stats.inbound_cnt++; 547 card->perf_stats.inbound_start_time = qeth_get_micros(); 548 } 549 550 while (1) { 551 if (!card->rx.b_count) { 552 card->rx.qdio_err = 0; 553 card->rx.b_count = qdio_get_next_buffers( 554 card->data.ccwdev, 0, &card->rx.b_index, 555 &card->rx.qdio_err); 556 if (card->rx.b_count <= 0) { 557 card->rx.b_count = 0; 558 break; 559 } 560 card->rx.b_element = 561 &card->qdio.in_q->bufs[card->rx.b_index] 562 .buffer->element[0]; 563 card->rx.e_offset = 0; 564 } 565 566 while (card->rx.b_count) { 567 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 568 if (!(card->rx.qdio_err && 569 qeth_check_qdio_errors(card, buffer->buffer, 570 card->rx.qdio_err, "qinerr"))) 571 work_done += qeth_l2_process_inbound_buffer( 572 card, new_budget, &done); 573 else 574 done = 1; 575 576 if (done) { 577 if (card->options.performance_stats) 578 card->perf_stats.bufs_rec++; 579 qeth_put_buffer_pool_entry(card, 580 buffer->pool_entry); 581 qeth_queue_input_buffer(card, card->rx.b_index); 582 card->rx.b_count--; 583 if (card->rx.b_count) { 584 card->rx.b_index = 585 (card->rx.b_index + 1) % 586 QDIO_MAX_BUFFERS_PER_Q; 587 card->rx.b_element = 588 &card->qdio.in_q 589 ->bufs[card->rx.b_index] 590 .buffer->element[0]; 591 card->rx.e_offset = 0; 592 } 593 } 594 595 if (work_done >= budget) 596 goto out; 597 else 598 new_budget = budget - work_done; 599 } 600 } 601 602 napi_complete(napi); 603 if (qdio_start_irq(card->data.ccwdev, 0)) 604 napi_schedule(&card->napi); 605 out: 606 if (card->options.performance_stats) 607 card->perf_stats.inbound_time += qeth_get_micros() - 608 card->perf_stats.inbound_start_time; 609 return work_done; 610 } 611 612 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 613 enum qeth_ipa_cmds ipacmd) 614 { 615 struct qeth_ipa_cmd *cmd; 616 struct qeth_cmd_buffer *iob; 617 618 QETH_CARD_TEXT(card, 2, "L2sdmac"); 619 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 620 if (!iob) 621 return -ENOMEM; 622 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 623 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN; 624 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN); 625 return qeth_send_ipa_cmd(card, iob, NULL, NULL); 626 } 627 628 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 629 { 630 int rc; 631 632 QETH_CARD_TEXT(card, 2, "L2Setmac"); 633 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac, 634 IPA_CMD_SETVMAC)); 635 if (rc == 0) { 636 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 637 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN); 638 dev_info(&card->gdev->dev, 639 "MAC address %pM successfully registered on device %s\n", 640 card->dev->dev_addr, card->dev->name); 641 } else { 642 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 643 switch (rc) { 644 case -EEXIST: 645 dev_warn(&card->gdev->dev, 646 "MAC address %pM already exists\n", mac); 647 break; 648 case -EPERM: 649 dev_warn(&card->gdev->dev, 650 "MAC address %pM is not authorized\n", mac); 651 break; 652 } 653 } 654 return rc; 655 } 656 657 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 658 { 659 int rc; 660 661 QETH_CARD_TEXT(card, 2, "L2Delmac"); 662 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 663 return 0; 664 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac, 665 IPA_CMD_DELVMAC)); 666 if (rc == 0) 667 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 668 return rc; 669 } 670 671 static int qeth_l2_request_initial_mac(struct qeth_card *card) 672 { 673 int rc = 0; 674 char vendor_pre[] = {0x02, 0x00, 0x00}; 675 676 QETH_DBF_TEXT(SETUP, 2, "doL2init"); 677 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 678 679 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 680 rc = qeth_query_setadapterparms(card); 681 if (rc) { 682 QETH_DBF_MESSAGE(2, "could not query adapter " 683 "parameters on device %s: x%x\n", 684 CARD_BUS_ID(card), rc); 685 } 686 } 687 688 if (card->info.type == QETH_CARD_TYPE_IQD || 689 card->info.type == QETH_CARD_TYPE_OSM || 690 card->info.type == QETH_CARD_TYPE_OSX || 691 card->info.guestlan) { 692 rc = qeth_setadpparms_change_macaddr(card); 693 if (rc) { 694 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 695 "device %s: x%x\n", CARD_BUS_ID(card), rc); 696 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 697 return rc; 698 } 699 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN); 700 } else { 701 eth_random_addr(card->dev->dev_addr); 702 memcpy(card->dev->dev_addr, vendor_pre, 3); 703 } 704 return 0; 705 } 706 707 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 708 { 709 struct sockaddr *addr = p; 710 struct qeth_card *card = dev->ml_priv; 711 int rc = 0; 712 713 QETH_CARD_TEXT(card, 3, "setmac"); 714 715 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) { 716 QETH_CARD_TEXT(card, 3, "setmcINV"); 717 return -EOPNOTSUPP; 718 } 719 720 if (card->info.type == QETH_CARD_TYPE_OSN || 721 card->info.type == QETH_CARD_TYPE_OSM || 722 card->info.type == QETH_CARD_TYPE_OSX) { 723 QETH_CARD_TEXT(card, 3, "setmcTYP"); 724 return -EOPNOTSUPP; 725 } 726 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN); 727 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 728 QETH_CARD_TEXT(card, 3, "setmcREC"); 729 return -ERESTARTSYS; 730 } 731 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 732 if (!rc || (rc == -ENOENT)) 733 rc = qeth_l2_send_setmac(card, addr->sa_data); 734 return rc ? -EINVAL : 0; 735 } 736 737 static void qeth_promisc_to_bridge(struct qeth_card *card) 738 { 739 struct net_device *dev = card->dev; 740 enum qeth_ipa_promisc_modes promisc_mode; 741 int role; 742 int rc; 743 744 QETH_CARD_TEXT(card, 3, "pmisc2br"); 745 746 if (!card->options.sbp.reflect_promisc) 747 return; 748 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 749 : SET_PROMISC_MODE_OFF; 750 if (promisc_mode == card->info.promisc_mode) 751 return; 752 753 if (promisc_mode == SET_PROMISC_MODE_ON) { 754 if (card->options.sbp.reflect_promisc_primary) 755 role = QETH_SBP_ROLE_PRIMARY; 756 else 757 role = QETH_SBP_ROLE_SECONDARY; 758 } else 759 role = QETH_SBP_ROLE_NONE; 760 761 rc = qeth_bridgeport_setrole(card, role); 762 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 763 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 764 if (!rc) { 765 card->options.sbp.role = role; 766 card->info.promisc_mode = promisc_mode; 767 } 768 769 } 770 /* New MAC address is added to the hash table and marked to be written on card 771 * only if there is not in the hash table storage already 772 * 773 */ 774 static void 775 qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc) 776 { 777 struct qeth_mac *mac; 778 779 hash_for_each_possible(card->mac_htable, mac, hnode, 780 qeth_l2_mac_hash(ha->addr)) { 781 if (is_uc == mac->is_uc && 782 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) { 783 mac->disp_flag = QETH_DISP_MAC_DO_NOTHING; 784 return; 785 } 786 } 787 788 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 789 790 if (!mac) 791 return; 792 793 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN); 794 mac->is_uc = is_uc; 795 mac->disp_flag = QETH_DISP_MAC_ADD; 796 797 hash_add(card->mac_htable, &mac->hnode, 798 qeth_l2_mac_hash(mac->mac_addr)); 799 800 } 801 802 static void qeth_l2_set_rx_mode(struct net_device *dev) 803 { 804 struct qeth_card *card = dev->ml_priv; 805 struct netdev_hw_addr *ha; 806 struct qeth_mac *mac; 807 struct hlist_node *tmp; 808 int i; 809 int rc; 810 811 if (card->info.type == QETH_CARD_TYPE_OSN) 812 return; 813 814 QETH_CARD_TEXT(card, 3, "setmulti"); 815 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 816 (card->state != CARD_STATE_UP)) 817 return; 818 819 spin_lock_bh(&card->mclock); 820 821 netdev_for_each_mc_addr(ha, dev) 822 qeth_l2_add_mac(card, ha, 0); 823 824 netdev_for_each_uc_addr(ha, dev) 825 qeth_l2_add_mac(card, ha, 1); 826 827 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 828 if (mac->disp_flag == QETH_DISP_MAC_DELETE) { 829 if (!mac->is_uc) 830 rc = qeth_l2_send_delgroupmac(card, 831 mac->mac_addr); 832 else { 833 rc = qeth_l2_send_setdelmac(card, mac->mac_addr, 834 IPA_CMD_DELVMAC); 835 } 836 837 hash_del(&mac->hnode); 838 kfree(mac); 839 840 } else if (mac->disp_flag == QETH_DISP_MAC_ADD) { 841 rc = qeth_l2_write_mac(card, mac); 842 if (rc) { 843 hash_del(&mac->hnode); 844 kfree(mac); 845 } else 846 mac->disp_flag = QETH_DISP_MAC_DELETE; 847 } else 848 mac->disp_flag = QETH_DISP_MAC_DELETE; 849 } 850 851 spin_unlock_bh(&card->mclock); 852 853 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 854 qeth_setadp_promisc_mode(card); 855 else 856 qeth_promisc_to_bridge(card); 857 } 858 859 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 860 { 861 int rc; 862 struct qeth_hdr *hdr = NULL; 863 int elements = 0; 864 struct qeth_card *card = dev->ml_priv; 865 struct sk_buff *new_skb = skb; 866 int cast_type = qeth_l2_get_cast_type(card, skb); 867 struct qeth_qdio_out_q *queue; 868 int tx_bytes = skb->len; 869 int data_offset = -1; 870 int elements_needed = 0; 871 int hd_len = 0; 872 873 if (card->qdio.do_prio_queueing || (cast_type && 874 card->info.is_multicast_different)) 875 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb, 876 qeth_get_ip_version(skb), cast_type)]; 877 else 878 queue = card->qdio.out_qs[card->qdio.default_out_queue]; 879 880 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 881 card->stats.tx_carrier_errors++; 882 goto tx_drop; 883 } 884 885 if ((card->info.type == QETH_CARD_TYPE_OSN) && 886 (skb->protocol == htons(ETH_P_IPV6))) 887 goto tx_drop; 888 889 if (card->options.performance_stats) { 890 card->perf_stats.outbound_cnt++; 891 card->perf_stats.outbound_start_time = qeth_get_micros(); 892 } 893 netif_stop_queue(dev); 894 895 if (card->info.type == QETH_CARD_TYPE_OSN) 896 hdr = (struct qeth_hdr *)skb->data; 897 else { 898 if (card->info.type == QETH_CARD_TYPE_IQD) { 899 new_skb = skb; 900 data_offset = ETH_HLEN; 901 hd_len = ETH_HLEN; 902 hdr = kmem_cache_alloc(qeth_core_header_cache, 903 GFP_ATOMIC); 904 if (!hdr) 905 goto tx_drop; 906 elements_needed++; 907 skb_reset_mac_header(new_skb); 908 qeth_l2_fill_header(card, hdr, new_skb, cast_type); 909 hdr->hdr.l2.pkt_length = new_skb->len; 910 memcpy(((char *)hdr) + sizeof(struct qeth_hdr), 911 skb_mac_header(new_skb), ETH_HLEN); 912 } else { 913 /* create a clone with writeable headroom */ 914 new_skb = skb_realloc_headroom(skb, 915 sizeof(struct qeth_hdr)); 916 if (!new_skb) 917 goto tx_drop; 918 hdr = (struct qeth_hdr *)skb_push(new_skb, 919 sizeof(struct qeth_hdr)); 920 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr)); 921 qeth_l2_fill_header(card, hdr, new_skb, cast_type); 922 if (new_skb->ip_summed == CHECKSUM_PARTIAL) 923 qeth_l2_hdr_csum(card, hdr, new_skb); 924 } 925 } 926 927 elements = qeth_get_elements_no(card, new_skb, elements_needed); 928 if (!elements) { 929 if (data_offset >= 0) 930 kmem_cache_free(qeth_core_header_cache, hdr); 931 goto tx_drop; 932 } 933 934 if (card->info.type != QETH_CARD_TYPE_IQD) { 935 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, 936 sizeof(struct qeth_hdr_layer2))) 937 goto tx_drop; 938 rc = qeth_do_send_packet(card, queue, new_skb, hdr, 939 elements); 940 } else 941 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, 942 elements, data_offset, hd_len); 943 if (!rc) { 944 card->stats.tx_packets++; 945 card->stats.tx_bytes += tx_bytes; 946 if (new_skb != skb) 947 dev_kfree_skb_any(skb); 948 rc = NETDEV_TX_OK; 949 } else { 950 if (data_offset >= 0) 951 kmem_cache_free(qeth_core_header_cache, hdr); 952 953 if (rc == -EBUSY) { 954 if (new_skb != skb) 955 dev_kfree_skb_any(new_skb); 956 return NETDEV_TX_BUSY; 957 } else 958 goto tx_drop; 959 } 960 961 netif_wake_queue(dev); 962 if (card->options.performance_stats) 963 card->perf_stats.outbound_time += qeth_get_micros() - 964 card->perf_stats.outbound_start_time; 965 return rc; 966 967 tx_drop: 968 card->stats.tx_dropped++; 969 card->stats.tx_errors++; 970 if ((new_skb != skb) && new_skb) 971 dev_kfree_skb_any(new_skb); 972 dev_kfree_skb_any(skb); 973 netif_wake_queue(dev); 974 return NETDEV_TX_OK; 975 } 976 977 static int __qeth_l2_open(struct net_device *dev) 978 { 979 struct qeth_card *card = dev->ml_priv; 980 int rc = 0; 981 982 QETH_CARD_TEXT(card, 4, "qethopen"); 983 if (card->state == CARD_STATE_UP) 984 return rc; 985 if (card->state != CARD_STATE_SOFTSETUP) 986 return -ENODEV; 987 988 if ((card->info.type != QETH_CARD_TYPE_OSN) && 989 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 990 QETH_CARD_TEXT(card, 4, "nomacadr"); 991 return -EPERM; 992 } 993 card->data.state = CH_STATE_UP; 994 card->state = CARD_STATE_UP; 995 netif_start_queue(dev); 996 997 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 998 napi_enable(&card->napi); 999 napi_schedule(&card->napi); 1000 } else 1001 rc = -EIO; 1002 return rc; 1003 } 1004 1005 static int qeth_l2_open(struct net_device *dev) 1006 { 1007 struct qeth_card *card = dev->ml_priv; 1008 1009 QETH_CARD_TEXT(card, 5, "qethope_"); 1010 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 1011 QETH_CARD_TEXT(card, 3, "openREC"); 1012 return -ERESTARTSYS; 1013 } 1014 return __qeth_l2_open(dev); 1015 } 1016 1017 static int qeth_l2_stop(struct net_device *dev) 1018 { 1019 struct qeth_card *card = dev->ml_priv; 1020 1021 QETH_CARD_TEXT(card, 4, "qethstop"); 1022 netif_tx_disable(dev); 1023 if (card->state == CARD_STATE_UP) { 1024 card->state = CARD_STATE_SOFTSETUP; 1025 napi_disable(&card->napi); 1026 } 1027 return 0; 1028 } 1029 1030 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 1031 { 1032 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1033 1034 qeth_l2_create_device_attributes(&gdev->dev); 1035 INIT_LIST_HEAD(&card->vid_list); 1036 hash_init(card->mac_htable); 1037 card->options.layer2 = 1; 1038 card->info.hwtrap = 0; 1039 return 0; 1040 } 1041 1042 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 1043 { 1044 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1045 1046 qeth_l2_remove_device_attributes(&cgdev->dev); 1047 qeth_set_allowed_threads(card, 0, 1); 1048 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1049 1050 if (cgdev->state == CCWGROUP_ONLINE) 1051 qeth_l2_set_offline(cgdev); 1052 1053 if (card->dev) { 1054 unregister_netdev(card->dev); 1055 card->dev = NULL; 1056 } 1057 return; 1058 } 1059 1060 static const struct ethtool_ops qeth_l2_ethtool_ops = { 1061 .get_link = ethtool_op_get_link, 1062 .get_strings = qeth_core_get_strings, 1063 .get_ethtool_stats = qeth_core_get_ethtool_stats, 1064 .get_sset_count = qeth_core_get_sset_count, 1065 .get_drvinfo = qeth_core_get_drvinfo, 1066 .get_settings = qeth_core_ethtool_get_settings, 1067 }; 1068 1069 static const struct ethtool_ops qeth_l2_osn_ops = { 1070 .get_strings = qeth_core_get_strings, 1071 .get_ethtool_stats = qeth_core_get_ethtool_stats, 1072 .get_sset_count = qeth_core_get_sset_count, 1073 .get_drvinfo = qeth_core_get_drvinfo, 1074 }; 1075 1076 static const struct net_device_ops qeth_l2_netdev_ops = { 1077 .ndo_open = qeth_l2_open, 1078 .ndo_stop = qeth_l2_stop, 1079 .ndo_get_stats = qeth_get_stats, 1080 .ndo_start_xmit = qeth_l2_hard_start_xmit, 1081 .ndo_validate_addr = eth_validate_addr, 1082 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 1083 .ndo_do_ioctl = qeth_l2_do_ioctl, 1084 .ndo_set_mac_address = qeth_l2_set_mac_address, 1085 .ndo_change_mtu = qeth_change_mtu, 1086 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 1087 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 1088 .ndo_tx_timeout = qeth_tx_timeout, 1089 .ndo_fix_features = qeth_l2_fix_features, 1090 .ndo_set_features = qeth_l2_set_features 1091 }; 1092 1093 static int qeth_l2_setup_netdev(struct qeth_card *card) 1094 { 1095 switch (card->info.type) { 1096 case QETH_CARD_TYPE_IQD: 1097 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 1098 ether_setup); 1099 break; 1100 case QETH_CARD_TYPE_OSN: 1101 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 1102 ether_setup); 1103 card->dev->flags |= IFF_NOARP; 1104 break; 1105 default: 1106 card->dev = alloc_etherdev(0); 1107 } 1108 1109 if (!card->dev) 1110 return -ENODEV; 1111 1112 card->dev->ml_priv = card; 1113 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 1114 card->dev->mtu = card->info.initial_mtu; 1115 card->dev->netdev_ops = &qeth_l2_netdev_ops; 1116 card->dev->ethtool_ops = 1117 (card->info.type != QETH_CARD_TYPE_OSN) ? 1118 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops; 1119 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 1120 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 1121 card->dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM; 1122 /* Turn on RX offloading per default */ 1123 card->dev->features |= NETIF_F_RXCSUM; 1124 } 1125 card->info.broadcast_capable = 1; 1126 qeth_l2_request_initial_mac(card); 1127 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 1128 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT); 1129 netif_carrier_off(card->dev); 1130 return register_netdev(card->dev); 1131 } 1132 1133 static int qeth_l2_start_ipassists(struct qeth_card *card) 1134 { 1135 /* configure isolation level */ 1136 if (qeth_set_access_ctrl_online(card, 0)) 1137 return -ENODEV; 1138 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 1139 qeth_set_rx_csum(card, 1); 1140 qeth_start_ipa_tx_checksum(card); 1141 return 0; 1142 } 1143 1144 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1145 { 1146 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1147 int rc = 0; 1148 enum qeth_card_states recover_flag; 1149 1150 mutex_lock(&card->discipline_mutex); 1151 mutex_lock(&card->conf_mutex); 1152 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1153 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1154 1155 recover_flag = card->state; 1156 rc = qeth_core_hardsetup_card(card); 1157 if (rc) { 1158 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1159 rc = -ENODEV; 1160 goto out_remove; 1161 } 1162 qeth_bridgeport_query_support(card); 1163 if (card->options.sbp.supported_funcs) 1164 dev_info(&card->gdev->dev, 1165 "The device represents a Bridge Capable Port\n"); 1166 qeth_trace_features(card); 1167 1168 if (!card->dev && qeth_l2_setup_netdev(card)) { 1169 rc = -ENODEV; 1170 goto out_remove; 1171 } 1172 1173 if (card->info.type != QETH_CARD_TYPE_OSN) 1174 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1175 1176 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1177 if (card->info.hwtrap && 1178 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1179 card->info.hwtrap = 0; 1180 } else 1181 card->info.hwtrap = 0; 1182 1183 qeth_l2_setup_bridgeport_attrs(card); 1184 1185 card->state = CARD_STATE_HARDSETUP; 1186 memset(&card->rx, 0, sizeof(struct qeth_rx)); 1187 qeth_print_status_message(card); 1188 1189 /* softsetup */ 1190 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1191 1192 rc = qeth_send_startlan(card); 1193 if (rc) { 1194 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1195 if (rc == 0xe080) { 1196 dev_warn(&card->gdev->dev, 1197 "The LAN is offline\n"); 1198 card->lan_online = 0; 1199 goto contin; 1200 } 1201 rc = -ENODEV; 1202 goto out_remove; 1203 } else 1204 card->lan_online = 1; 1205 1206 contin: 1207 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1208 (card->info.type == QETH_CARD_TYPE_OSX)) { 1209 if (qeth_l2_start_ipassists(card)) 1210 goto out_remove; 1211 } 1212 1213 if (card->info.type != QETH_CARD_TYPE_OSN && 1214 card->info.type != QETH_CARD_TYPE_OSM) 1215 qeth_l2_process_vlans(card); 1216 1217 netif_tx_disable(card->dev); 1218 1219 rc = qeth_init_qdio_queues(card); 1220 if (rc) { 1221 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1222 rc = -ENODEV; 1223 goto out_remove; 1224 } 1225 card->state = CARD_STATE_SOFTSETUP; 1226 if (card->lan_online) 1227 netif_carrier_on(card->dev); 1228 else 1229 netif_carrier_off(card->dev); 1230 1231 qeth_set_allowed_threads(card, 0xffffffff, 0); 1232 if (recover_flag == CARD_STATE_RECOVER) { 1233 if (recovery_mode && 1234 card->info.type != QETH_CARD_TYPE_OSN) { 1235 __qeth_l2_open(card->dev); 1236 } else { 1237 rtnl_lock(); 1238 dev_open(card->dev); 1239 rtnl_unlock(); 1240 } 1241 /* this also sets saved unicast addresses */ 1242 qeth_l2_set_rx_mode(card->dev); 1243 } 1244 /* let user_space know that device is online */ 1245 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1246 mutex_unlock(&card->conf_mutex); 1247 mutex_unlock(&card->discipline_mutex); 1248 return 0; 1249 1250 out_remove: 1251 qeth_l2_stop_card(card, 0); 1252 ccw_device_set_offline(CARD_DDEV(card)); 1253 ccw_device_set_offline(CARD_WDEV(card)); 1254 ccw_device_set_offline(CARD_RDEV(card)); 1255 qdio_free(CARD_DDEV(card)); 1256 if (recover_flag == CARD_STATE_RECOVER) 1257 card->state = CARD_STATE_RECOVER; 1258 else 1259 card->state = CARD_STATE_DOWN; 1260 mutex_unlock(&card->conf_mutex); 1261 mutex_unlock(&card->discipline_mutex); 1262 return rc; 1263 } 1264 1265 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1266 { 1267 return __qeth_l2_set_online(gdev, 0); 1268 } 1269 1270 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1271 int recovery_mode) 1272 { 1273 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1274 int rc = 0, rc2 = 0, rc3 = 0; 1275 enum qeth_card_states recover_flag; 1276 1277 mutex_lock(&card->discipline_mutex); 1278 mutex_lock(&card->conf_mutex); 1279 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1280 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1281 1282 if (card->dev && netif_carrier_ok(card->dev)) 1283 netif_carrier_off(card->dev); 1284 recover_flag = card->state; 1285 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1286 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1287 card->info.hwtrap = 1; 1288 } 1289 qeth_l2_stop_card(card, recovery_mode); 1290 rc = ccw_device_set_offline(CARD_DDEV(card)); 1291 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1292 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1293 if (!rc) 1294 rc = (rc2) ? rc2 : rc3; 1295 if (rc) 1296 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1297 qdio_free(CARD_DDEV(card)); 1298 if (recover_flag == CARD_STATE_UP) 1299 card->state = CARD_STATE_RECOVER; 1300 /* let user_space know that device is offline */ 1301 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1302 mutex_unlock(&card->conf_mutex); 1303 mutex_unlock(&card->discipline_mutex); 1304 return 0; 1305 } 1306 1307 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1308 { 1309 return __qeth_l2_set_offline(cgdev, 0); 1310 } 1311 1312 static int qeth_l2_recover(void *ptr) 1313 { 1314 struct qeth_card *card; 1315 int rc = 0; 1316 1317 card = (struct qeth_card *) ptr; 1318 QETH_CARD_TEXT(card, 2, "recover1"); 1319 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1320 return 0; 1321 QETH_CARD_TEXT(card, 2, "recover2"); 1322 dev_warn(&card->gdev->dev, 1323 "A recovery process has been started for the device\n"); 1324 qeth_set_recovery_task(card); 1325 __qeth_l2_set_offline(card->gdev, 1); 1326 rc = __qeth_l2_set_online(card->gdev, 1); 1327 if (!rc) 1328 dev_info(&card->gdev->dev, 1329 "Device successfully recovered!\n"); 1330 else { 1331 qeth_close_dev(card); 1332 dev_warn(&card->gdev->dev, "The qeth device driver " 1333 "failed to recover an error on the device\n"); 1334 } 1335 qeth_clear_recovery_task(card); 1336 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1337 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1338 return 0; 1339 } 1340 1341 static int __init qeth_l2_init(void) 1342 { 1343 pr_info("register layer 2 discipline\n"); 1344 return 0; 1345 } 1346 1347 static void __exit qeth_l2_exit(void) 1348 { 1349 pr_info("unregister layer 2 discipline\n"); 1350 } 1351 1352 static void qeth_l2_shutdown(struct ccwgroup_device *gdev) 1353 { 1354 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1355 qeth_set_allowed_threads(card, 0, 1); 1356 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 1357 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1358 qeth_qdio_clear_card(card, 0); 1359 qeth_clear_qdio_buffers(card); 1360 qdio_free(CARD_DDEV(card)); 1361 } 1362 1363 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1364 { 1365 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1366 1367 if (card->dev) 1368 netif_device_detach(card->dev); 1369 qeth_set_allowed_threads(card, 0, 1); 1370 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1371 if (gdev->state == CCWGROUP_OFFLINE) 1372 return 0; 1373 if (card->state == CARD_STATE_UP) { 1374 if (card->info.hwtrap) 1375 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1376 __qeth_l2_set_offline(card->gdev, 1); 1377 } else 1378 __qeth_l2_set_offline(card->gdev, 0); 1379 return 0; 1380 } 1381 1382 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1383 { 1384 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1385 int rc = 0; 1386 1387 if (gdev->state == CCWGROUP_OFFLINE) 1388 goto out; 1389 1390 if (card->state == CARD_STATE_RECOVER) { 1391 rc = __qeth_l2_set_online(card->gdev, 1); 1392 if (rc) { 1393 rtnl_lock(); 1394 dev_close(card->dev); 1395 rtnl_unlock(); 1396 } 1397 } else 1398 rc = __qeth_l2_set_online(card->gdev, 0); 1399 out: 1400 qeth_set_allowed_threads(card, 0xffffffff, 0); 1401 if (card->dev) 1402 netif_device_attach(card->dev); 1403 if (rc) 1404 dev_warn(&card->gdev->dev, "The qeth device driver " 1405 "failed to recover an error on the device\n"); 1406 return rc; 1407 } 1408 1409 /* Returns zero if the command is successfully "consumed" */ 1410 static int qeth_l2_control_event(struct qeth_card *card, 1411 struct qeth_ipa_cmd *cmd) 1412 { 1413 switch (cmd->hdr.command) { 1414 case IPA_CMD_SETBRIDGEPORT_OSA: 1415 case IPA_CMD_SETBRIDGEPORT_IQD: 1416 if (cmd->data.sbp.hdr.command_code == 1417 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1418 qeth_bridge_state_change(card, cmd); 1419 return 0; 1420 } else 1421 return 1; 1422 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1423 qeth_bridge_host_event(card, cmd); 1424 return 0; 1425 default: 1426 return 1; 1427 } 1428 } 1429 1430 struct qeth_discipline qeth_l2_discipline = { 1431 .start_poll = qeth_qdio_start_poll, 1432 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 1433 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 1434 .recover = qeth_l2_recover, 1435 .setup = qeth_l2_probe_device, 1436 .remove = qeth_l2_remove_device, 1437 .set_online = qeth_l2_set_online, 1438 .set_offline = qeth_l2_set_offline, 1439 .shutdown = qeth_l2_shutdown, 1440 .freeze = qeth_l2_pm_suspend, 1441 .thaw = qeth_l2_pm_resume, 1442 .restore = qeth_l2_pm_resume, 1443 .control_event_handler = qeth_l2_control_event, 1444 }; 1445 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1446 1447 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1448 struct qeth_cmd_buffer *iob) 1449 { 1450 unsigned long flags; 1451 int rc = 0; 1452 1453 QETH_CARD_TEXT(card, 5, "osndctrd"); 1454 1455 wait_event(card->wait_q, 1456 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1457 qeth_prepare_control_data(card, len, iob); 1458 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1459 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1460 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1461 (addr_t) iob, 0, 0); 1462 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1463 if (rc) { 1464 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1465 "ccw_device_start rc = %i\n", rc); 1466 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1467 qeth_release_buffer(iob->channel, iob); 1468 atomic_set(&card->write.irq_pending, 0); 1469 wake_up(&card->wait_q); 1470 } 1471 return rc; 1472 } 1473 1474 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1475 struct qeth_cmd_buffer *iob, int data_len) 1476 { 1477 u16 s1, s2; 1478 1479 QETH_CARD_TEXT(card, 4, "osndipa"); 1480 1481 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1482 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1483 s2 = (u16)data_len; 1484 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1485 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1486 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1487 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1488 return qeth_osn_send_control_data(card, s1, iob); 1489 } 1490 1491 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1492 { 1493 struct qeth_cmd_buffer *iob; 1494 struct qeth_card *card; 1495 int rc; 1496 1497 if (!dev) 1498 return -ENODEV; 1499 card = dev->ml_priv; 1500 if (!card) 1501 return -ENODEV; 1502 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1503 if (!qeth_card_hw_is_reachable(card)) 1504 return -ENODEV; 1505 iob = qeth_wait_for_buffer(&card->write); 1506 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1507 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1508 return rc; 1509 } 1510 EXPORT_SYMBOL(qeth_osn_assist); 1511 1512 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1513 int (*assist_cb)(struct net_device *, void *), 1514 int (*data_cb)(struct sk_buff *)) 1515 { 1516 struct qeth_card *card; 1517 1518 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1519 if (*dev == NULL) 1520 return -ENODEV; 1521 card = (*dev)->ml_priv; 1522 if (!card) 1523 return -ENODEV; 1524 QETH_CARD_TEXT(card, 2, "osnreg"); 1525 if ((assist_cb == NULL) || (data_cb == NULL)) 1526 return -EINVAL; 1527 card->osn_info.assist_cb = assist_cb; 1528 card->osn_info.data_cb = data_cb; 1529 return 0; 1530 } 1531 EXPORT_SYMBOL(qeth_osn_register); 1532 1533 void qeth_osn_deregister(struct net_device *dev) 1534 { 1535 struct qeth_card *card; 1536 1537 if (!dev) 1538 return; 1539 card = dev->ml_priv; 1540 if (!card) 1541 return; 1542 QETH_CARD_TEXT(card, 2, "osndereg"); 1543 card->osn_info.assist_cb = NULL; 1544 card->osn_info.data_cb = NULL; 1545 return; 1546 } 1547 EXPORT_SYMBOL(qeth_osn_deregister); 1548 1549 /* SETBRIDGEPORT support, async notifications */ 1550 1551 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1552 1553 /** 1554 * qeth_bridge_emit_host_event() - bridgeport address change notification 1555 * @card: qeth_card structure pointer, for udev events. 1556 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1557 * and reset token and addr_lnid are unused and may be NULL. 1558 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1559 * object, 0 - addition of an object. 1560 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1561 * @token: "network token" structure identifying physical address of the port. 1562 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1563 * 1564 * This function is called when registrations and deregistrations are 1565 * reported by the hardware, and also when notifications are enabled - 1566 * for all currently registered addresses. 1567 */ 1568 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1569 enum qeth_an_event_type evtype, 1570 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1571 { 1572 char str[7][32]; 1573 char *env[8]; 1574 int i = 0; 1575 1576 switch (evtype) { 1577 case anev_reg_unreg: 1578 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1579 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1580 ? "deregister" : "register"); 1581 env[i] = str[i]; i++; 1582 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1583 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1584 addr_lnid->lnid); 1585 env[i] = str[i]; i++; 1586 } 1587 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1588 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1589 addr_lnid->mac); 1590 env[i] = str[i]; i++; 1591 } 1592 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1593 token->cssid, token->ssid, token->devnum); 1594 env[i] = str[i]; i++; 1595 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1596 env[i] = str[i]; i++; 1597 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1598 token->chpid); 1599 env[i] = str[i]; i++; 1600 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1601 env[i] = str[i]; i++; 1602 break; 1603 case anev_abort: 1604 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1605 env[i] = str[i]; i++; 1606 break; 1607 case anev_reset: 1608 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1609 env[i] = str[i]; i++; 1610 break; 1611 } 1612 env[i] = NULL; 1613 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1614 } 1615 1616 struct qeth_bridge_state_data { 1617 struct work_struct worker; 1618 struct qeth_card *card; 1619 struct qeth_sbp_state_change qports; 1620 }; 1621 1622 static void qeth_bridge_state_change_worker(struct work_struct *work) 1623 { 1624 struct qeth_bridge_state_data *data = 1625 container_of(work, struct qeth_bridge_state_data, worker); 1626 /* We are only interested in the first entry - local port */ 1627 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1628 char env_locrem[32]; 1629 char env_role[32]; 1630 char env_state[32]; 1631 char *env[] = { 1632 env_locrem, 1633 env_role, 1634 env_state, 1635 NULL 1636 }; 1637 1638 /* Role should not change by itself, but if it did, */ 1639 /* information from the hardware is authoritative. */ 1640 mutex_lock(&data->card->conf_mutex); 1641 data->card->options.sbp.role = entry->role; 1642 mutex_unlock(&data->card->conf_mutex); 1643 1644 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1645 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1646 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1647 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1648 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1649 "<INVALID>"); 1650 snprintf(env_state, sizeof(env_state), "STATE=%s", 1651 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1652 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1653 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1654 "<INVALID>"); 1655 kobject_uevent_env(&data->card->gdev->dev.kobj, 1656 KOBJ_CHANGE, env); 1657 kfree(data); 1658 } 1659 1660 static void qeth_bridge_state_change(struct qeth_card *card, 1661 struct qeth_ipa_cmd *cmd) 1662 { 1663 struct qeth_sbp_state_change *qports = 1664 &cmd->data.sbp.data.state_change; 1665 struct qeth_bridge_state_data *data; 1666 int extrasize; 1667 1668 QETH_CARD_TEXT(card, 2, "brstchng"); 1669 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1670 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1671 return; 1672 } 1673 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1674 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1675 GFP_ATOMIC); 1676 if (!data) { 1677 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1678 return; 1679 } 1680 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1681 data->card = card; 1682 memcpy(&data->qports, qports, 1683 sizeof(struct qeth_sbp_state_change) + extrasize); 1684 queue_work(qeth_wq, &data->worker); 1685 } 1686 1687 struct qeth_bridge_host_data { 1688 struct work_struct worker; 1689 struct qeth_card *card; 1690 struct qeth_ipacmd_addr_change hostevs; 1691 }; 1692 1693 static void qeth_bridge_host_event_worker(struct work_struct *work) 1694 { 1695 struct qeth_bridge_host_data *data = 1696 container_of(work, struct qeth_bridge_host_data, worker); 1697 int i; 1698 1699 if (data->hostevs.lost_event_mask) { 1700 dev_info(&data->card->gdev->dev, 1701 "Address notification from the Bridge Port stopped %s (%s)\n", 1702 data->card->dev->name, 1703 (data->hostevs.lost_event_mask == 0x01) 1704 ? "Overflow" 1705 : (data->hostevs.lost_event_mask == 0x02) 1706 ? "Bridge port state change" 1707 : "Unknown reason"); 1708 mutex_lock(&data->card->conf_mutex); 1709 data->card->options.sbp.hostnotification = 0; 1710 mutex_unlock(&data->card->conf_mutex); 1711 qeth_bridge_emit_host_event(data->card, anev_abort, 1712 0, NULL, NULL); 1713 } else 1714 for (i = 0; i < data->hostevs.num_entries; i++) { 1715 struct qeth_ipacmd_addr_change_entry *entry = 1716 &data->hostevs.entry[i]; 1717 qeth_bridge_emit_host_event(data->card, 1718 anev_reg_unreg, 1719 entry->change_code, 1720 &entry->token, &entry->addr_lnid); 1721 } 1722 kfree(data); 1723 } 1724 1725 static void qeth_bridge_host_event(struct qeth_card *card, 1726 struct qeth_ipa_cmd *cmd) 1727 { 1728 struct qeth_ipacmd_addr_change *hostevs = 1729 &cmd->data.addrchange; 1730 struct qeth_bridge_host_data *data; 1731 int extrasize; 1732 1733 QETH_CARD_TEXT(card, 2, "brhostev"); 1734 if (cmd->hdr.return_code != 0x0000) { 1735 if (cmd->hdr.return_code == 0x0010) { 1736 if (hostevs->lost_event_mask == 0x00) 1737 hostevs->lost_event_mask = 0xff; 1738 } else { 1739 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1740 cmd->hdr.return_code); 1741 return; 1742 } 1743 } 1744 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1745 hostevs->num_entries; 1746 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1747 GFP_ATOMIC); 1748 if (!data) { 1749 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1750 return; 1751 } 1752 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1753 data->card = card; 1754 memcpy(&data->hostevs, hostevs, 1755 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1756 queue_work(qeth_wq, &data->worker); 1757 } 1758 1759 /* SETBRIDGEPORT support; sending commands */ 1760 1761 struct _qeth_sbp_cbctl { 1762 u16 ipa_rc; 1763 u16 cmd_rc; 1764 union { 1765 u32 supported; 1766 struct { 1767 enum qeth_sbp_roles *role; 1768 enum qeth_sbp_states *state; 1769 } qports; 1770 } data; 1771 }; 1772 1773 /** 1774 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1775 * @card: qeth_card structure pointer, for debug messages. 1776 * @cbctl: state structure with hardware return codes. 1777 * @setcmd: IPA command code 1778 * 1779 * Returns negative errno-compatible error indication or 0 on success. 1780 */ 1781 static int qeth_bridgeport_makerc(struct qeth_card *card, 1782 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1783 { 1784 int rc; 1785 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1786 1787 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1788 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1789 switch (cbctl->cmd_rc) { 1790 case 0x0000: 1791 rc = 0; 1792 break; 1793 case 0x2B04: 1794 case 0x0004: 1795 rc = -EOPNOTSUPP; 1796 break; 1797 case 0x2B0C: 1798 case 0x000C: /* Not configured as bridge Port */ 1799 rc = -ENODEV; /* maybe not the best code here? */ 1800 dev_err(&card->gdev->dev, 1801 "The device is not configured as a Bridge Port\n"); 1802 break; 1803 case 0x2B14: 1804 case 0x0014: /* Another device is Primary */ 1805 switch (setcmd) { 1806 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1807 rc = -EEXIST; 1808 dev_err(&card->gdev->dev, 1809 "The LAN already has a primary Bridge Port\n"); 1810 break; 1811 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1812 rc = -EBUSY; 1813 dev_err(&card->gdev->dev, 1814 "The device is already a primary Bridge Port\n"); 1815 break; 1816 default: 1817 rc = -EIO; 1818 } 1819 break; 1820 case 0x2B18: 1821 case 0x0018: /* This device is currently Secondary */ 1822 rc = -EBUSY; 1823 dev_err(&card->gdev->dev, 1824 "The device is already a secondary Bridge Port\n"); 1825 break; 1826 case 0x2B1C: 1827 case 0x001C: /* Limit for Secondary devices reached */ 1828 rc = -EEXIST; 1829 dev_err(&card->gdev->dev, 1830 "The LAN cannot have more secondary Bridge Ports\n"); 1831 break; 1832 case 0x2B24: 1833 case 0x0024: /* This device is currently Primary */ 1834 rc = -EBUSY; 1835 dev_err(&card->gdev->dev, 1836 "The device is already a primary Bridge Port\n"); 1837 break; 1838 case 0x2B20: 1839 case 0x0020: /* Not authorized by zManager */ 1840 rc = -EACCES; 1841 dev_err(&card->gdev->dev, 1842 "The device is not authorized to be a Bridge Port\n"); 1843 break; 1844 default: 1845 rc = -EIO; 1846 } 1847 else 1848 switch (cbctl->ipa_rc) { 1849 case IPA_RC_NOTSUPP: 1850 rc = -EOPNOTSUPP; 1851 break; 1852 case IPA_RC_UNSUPPORTED_COMMAND: 1853 rc = -EOPNOTSUPP; 1854 break; 1855 default: 1856 rc = -EIO; 1857 } 1858 1859 if (rc) { 1860 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1861 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1862 } 1863 return rc; 1864 } 1865 1866 static inline int ipa_cmd_sbp(struct qeth_card *card) 1867 { 1868 return (card->info.type == QETH_CARD_TYPE_IQD) ? 1869 IPA_CMD_SETBRIDGEPORT_IQD : 1870 IPA_CMD_SETBRIDGEPORT_OSA; 1871 } 1872 1873 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1874 struct qeth_reply *reply, unsigned long data) 1875 { 1876 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1877 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1878 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1879 cbctl->ipa_rc = cmd->hdr.return_code; 1880 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1881 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1882 cbctl->data.supported = 1883 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1884 } else { 1885 cbctl->data.supported = 0; 1886 } 1887 return 0; 1888 } 1889 1890 /** 1891 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1892 * @card: qeth_card structure pointer. 1893 * 1894 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1895 * strucutre: card->options.sbp.supported_funcs. 1896 */ 1897 static void qeth_bridgeport_query_support(struct qeth_card *card) 1898 { 1899 struct qeth_cmd_buffer *iob; 1900 struct qeth_ipa_cmd *cmd; 1901 struct _qeth_sbp_cbctl cbctl; 1902 1903 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1904 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1905 if (!iob) 1906 return; 1907 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1908 cmd->data.sbp.hdr.cmdlength = 1909 sizeof(struct qeth_ipacmd_sbp_hdr) + 1910 sizeof(struct qeth_sbp_query_cmds_supp); 1911 cmd->data.sbp.hdr.command_code = 1912 IPA_SBP_QUERY_COMMANDS_SUPPORTED; 1913 cmd->data.sbp.hdr.used_total = 1; 1914 cmd->data.sbp.hdr.seq_no = 1; 1915 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1916 (void *)&cbctl) || 1917 qeth_bridgeport_makerc(card, &cbctl, 1918 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1919 /* non-zero makerc signifies failure, and produce messages */ 1920 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1921 return; 1922 } 1923 card->options.sbp.supported_funcs = cbctl.data.supported; 1924 } 1925 1926 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1927 struct qeth_reply *reply, unsigned long data) 1928 { 1929 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1930 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1931 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1932 1933 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1934 cbctl->ipa_rc = cmd->hdr.return_code; 1935 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1936 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1937 return 0; 1938 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1939 cbctl->cmd_rc = 0xffff; 1940 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1941 return 0; 1942 } 1943 /* first entry contains the state of the local port */ 1944 if (qports->num_entries > 0) { 1945 if (cbctl->data.qports.role) 1946 *cbctl->data.qports.role = qports->entry[0].role; 1947 if (cbctl->data.qports.state) 1948 *cbctl->data.qports.state = qports->entry[0].state; 1949 } 1950 return 0; 1951 } 1952 1953 /** 1954 * qeth_bridgeport_query_ports() - query local bridgeport status. 1955 * @card: qeth_card structure pointer. 1956 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1957 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1958 * 1959 * Returns negative errno-compatible error indication or 0 on success. 1960 * 1961 * 'role' and 'state' are not updated in case of hardware operation failure. 1962 */ 1963 int qeth_bridgeport_query_ports(struct qeth_card *card, 1964 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1965 { 1966 int rc = 0; 1967 struct qeth_cmd_buffer *iob; 1968 struct qeth_ipa_cmd *cmd; 1969 struct _qeth_sbp_cbctl cbctl = { 1970 .data = { 1971 .qports = { 1972 .role = role, 1973 .state = state, 1974 }, 1975 }, 1976 }; 1977 1978 QETH_CARD_TEXT(card, 2, "brqports"); 1979 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1980 return -EOPNOTSUPP; 1981 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1982 if (!iob) 1983 return -ENOMEM; 1984 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1985 cmd->data.sbp.hdr.cmdlength = 1986 sizeof(struct qeth_ipacmd_sbp_hdr); 1987 cmd->data.sbp.hdr.command_code = 1988 IPA_SBP_QUERY_BRIDGE_PORTS; 1989 cmd->data.sbp.hdr.used_total = 1; 1990 cmd->data.sbp.hdr.seq_no = 1; 1991 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1992 (void *)&cbctl); 1993 if (rc < 0) 1994 return rc; 1995 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1996 } 1997 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 1998 1999 static int qeth_bridgeport_set_cb(struct qeth_card *card, 2000 struct qeth_reply *reply, unsigned long data) 2001 { 2002 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 2003 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 2004 QETH_CARD_TEXT(card, 2, "brsetrcb"); 2005 cbctl->ipa_rc = cmd->hdr.return_code; 2006 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 2007 return 0; 2008 } 2009 2010 /** 2011 * qeth_bridgeport_setrole() - Assign primary role to the port. 2012 * @card: qeth_card structure pointer. 2013 * @role: Role to assign. 2014 * 2015 * Returns negative errno-compatible error indication or 0 on success. 2016 */ 2017 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 2018 { 2019 int rc = 0; 2020 int cmdlength; 2021 struct qeth_cmd_buffer *iob; 2022 struct qeth_ipa_cmd *cmd; 2023 struct _qeth_sbp_cbctl cbctl; 2024 enum qeth_ipa_sbp_cmd setcmd; 2025 2026 QETH_CARD_TEXT(card, 2, "brsetrol"); 2027 switch (role) { 2028 case QETH_SBP_ROLE_NONE: 2029 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 2030 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2031 sizeof(struct qeth_sbp_reset_role); 2032 break; 2033 case QETH_SBP_ROLE_PRIMARY: 2034 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 2035 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2036 sizeof(struct qeth_sbp_set_primary); 2037 break; 2038 case QETH_SBP_ROLE_SECONDARY: 2039 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 2040 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2041 sizeof(struct qeth_sbp_set_secondary); 2042 break; 2043 default: 2044 return -EINVAL; 2045 } 2046 if (!(card->options.sbp.supported_funcs & setcmd)) 2047 return -EOPNOTSUPP; 2048 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 2049 if (!iob) 2050 return -ENOMEM; 2051 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2052 cmd->data.sbp.hdr.cmdlength = cmdlength; 2053 cmd->data.sbp.hdr.command_code = setcmd; 2054 cmd->data.sbp.hdr.used_total = 1; 2055 cmd->data.sbp.hdr.seq_no = 1; 2056 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 2057 (void *)&cbctl); 2058 if (rc < 0) 2059 return rc; 2060 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 2061 } 2062 2063 /** 2064 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 2065 * @card: qeth_card structure pointer, for debug messages. 2066 * 2067 * Returns negative errno-compatible error indication or 0 on success. 2068 */ 2069 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 2070 { 2071 int rc; 2072 2073 if (pnso_rc == 0) 2074 switch (response) { 2075 case 0x0001: 2076 rc = 0; 2077 break; 2078 case 0x0004: 2079 case 0x0100: 2080 case 0x0106: 2081 rc = -EOPNOTSUPP; 2082 dev_err(&card->gdev->dev, 2083 "Setting address notification failed\n"); 2084 break; 2085 case 0x0107: 2086 rc = -EAGAIN; 2087 break; 2088 default: 2089 rc = -EIO; 2090 } 2091 else 2092 rc = -EIO; 2093 2094 if (rc) { 2095 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 2096 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 2097 } 2098 return rc; 2099 } 2100 2101 static void qeth_bridgeport_an_set_cb(void *priv, 2102 enum qdio_brinfo_entry_type type, void *entry) 2103 { 2104 struct qeth_card *card = (struct qeth_card *)priv; 2105 struct qdio_brinfo_entry_l2 *l2entry; 2106 u8 code; 2107 2108 if (type != l2_addr_lnid) { 2109 WARN_ON_ONCE(1); 2110 return; 2111 } 2112 2113 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 2114 code = IPA_ADDR_CHANGE_CODE_MACADDR; 2115 if (l2entry->addr_lnid.lnid) 2116 code |= IPA_ADDR_CHANGE_CODE_VLANID; 2117 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 2118 (struct net_if_token *)&l2entry->nit, 2119 (struct mac_addr_lnid *)&l2entry->addr_lnid); 2120 } 2121 2122 /** 2123 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 2124 * @card: qeth_card structure pointer. 2125 * @enable: 0 - disable, non-zero - enable notifications 2126 * 2127 * Returns negative errno-compatible error indication or 0 on success. 2128 * 2129 * On enable, emits a series of address notifications udev events for all 2130 * currently registered hosts. 2131 */ 2132 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 2133 { 2134 int rc; 2135 u16 response; 2136 struct ccw_device *ddev; 2137 struct subchannel_id schid; 2138 2139 if (!card) 2140 return -EINVAL; 2141 if (!card->options.sbp.supported_funcs) 2142 return -EOPNOTSUPP; 2143 ddev = CARD_DDEV(card); 2144 ccw_device_get_schid(ddev, &schid); 2145 2146 if (enable) { 2147 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2148 rc = qdio_pnso_brinfo(schid, 1, &response, 2149 qeth_bridgeport_an_set_cb, card); 2150 } else 2151 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2152 return qeth_anset_makerc(card, rc, response); 2153 } 2154 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2155 2156 module_init(qeth_l2_init); 2157 module_exit(qeth_l2_exit); 2158 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2159 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2160 MODULE_LICENSE("GPL"); 2161